We're dividing 1697584 by 312 
The aim is to understand the frequency of 312 in 1697584.

Moving on to step 1:
When dividing 1 by 312, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 312

Moving on to step 2:
312 can be fit into 16 0 times, resulting in a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 312

On to step 3:
If we divide 169 by 312, we get 0 and a remainder of 169.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 169 to get 169.
Take the next digit (7) from the dividend and append it to 169, then repeat: 1697 / 312

Advancing to step 4:
1697 divided by 312 is 5 with a remainder of 137.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 1560 from 1697 and we're left with 137.
Grab the next digit (5) from the dividend, add it to 137, then carry on: 1375 / 312

Going ahead to step 5:
312 goes into 1375 4 times with a remainder of 127.
The next digit of our result is 4. 
Result so far: 54.0
Subtracting 1248 from 1375 leaves us with 127.
Fetch the next digit (8) from the dividend, attach it to 127 and continue: 1278 / 312

On to step 6:
The number 312 fits into 1278 4 times, leaving a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 544.0
If we subtract 1248 from 1278, we get 30.
Fetch the next digit (4) from the dividend, attach it to 30 and continue: 304 / 312

Advancing to step 7:
When dividing 304 by 312, we get 0 with a remainder of 304.
The next digit of our result is 0. 
Result so far: 5440.0
Subtract 0 from 304 to get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Going ahead to step 8:
312 goes into 3040 9 times with a remainder of 232.
Write down 9 as next digit of the result. 
Result so far: 5440.9
If we subtract 2808 from 3040, we get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Advancing to step 9:
312 goes into 2320 7 times with a remainder of 136.
Write down 7 as next digit of the result. 
Result so far: 5440.97
If we subtract 2184 from 2320, we get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 10:
If we divide 1360 by 312, we get 4 and a remainder of 112.
Record the quotient 4 as the next digit in the result. 
Result so far: 5440.974
The remainder is 112 after subtracting 1248 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 11:
312 goes into 1120 3 times with a remainder of 184.
Put 3 as the next digit of the answer. 
Result so far: 5440.9743
If we subtract 936 from 1120, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 12:
If we divide 1840 by 312, we get 5 and a remainder of 280.
Use 5 as the next digit of our solution. 
Result so far: 5440.97435
If we subtract 1560 from 1840, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 13:
312 goes into 2800 8 times with a remainder of 304.
Put 8 as the next digit of the answer. 
Result so far: 5440.974358
If we take 2496 away from 2800, we end up with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Going ahead to step 14:
312 can be fit into 3040 9 times, resulting in a remainder of 232.
Write down 9 as next digit of the result. 
Result so far: 5440.9743589
Subtracting 2808 from 3040 leaves us with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 15:
2320 divided by 312 is 7 with a remainder of 136.
The next digit of our result is 7. 
Result so far: 5440.97435897
The remainder is 136 after subtracting 2184 from 2320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

The final outcome is 5440.97435897, with a leftover of 1.36e-07.